Here is the simplest chat you can make. It is less than 1K (about 440 bytes)

Edit this Chat Here

The complete script is in the textarea below. You can practice editing this chat right here on this page. Just make your edits and click the "Test Your Edits" button at the bottom of the page. if your edits don't work just hit your "back" key and click, "reset the form". If you like your edits just hit the "back" key on your keyboard and you can copy your edited script from the textarea and paste it into a webpage. You may get a message saying "there is no webpage or other information for the item chosen". If you do, just click test again..